RDA Mine

RDA, LLC has requested environmental permits from the South Carolina Department of Health and Environmental Control
(DHEC) to construct and operate a proposed limestone quarry off of Seaboard Road in Williamsburg County,
approximately five (5) miles northwest of Andrews, SC. Below is a listing of permits that will be required for the
proposed operation, and additional relevant information.

Mining

On June 21, 2017, DHEC's Bureau of Land and Waste Management (BLWM) received an application for an Individual Mine
Operating Permit for the proposed RDA Mine. The public comment period for the mine application began on August 7,
2017, and will remain open until after a formal public hearing has been held. The application and additional
information required by BLWM can be found on the public notice page. Questions about
the mining application and permitting process may be directed to:

Air Quality

On June 27, 2017, SC DHEC's Bureau of Air Quality (BAQ) received an application for an air quality construction
permit for the proposed RDA Mine. An air quality construction permit allows for the construction and start of
operation of equipment. The Department has received the following application and related information:

Water

DHEC issues National Pollutant Discharge Elimination System (NPDES) permits to minimize stormwater runoff and other
water discharges that may occur during construction and operation of the facility. On August 4, 2017, DHEC Bureau of
Water (BOW) received a Notice of Intent requesting coverage under the existing general NPDES permit for the proposed
RDA Mine.

Local DHEC Contacts

Public Engagement Opportunities

DHEC is currently accepting comments on the Mine Operating Permit Application. On November 30, 2017, DHEC hosted a public informational drop-in for anyone interested in talking with DHEC staff about the proposed project and the permitting processes. Staff from DHEC's mining, air quality, and water programs were available to listen to and address questions with attendees. The following materials were provided: